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Andy is moving a 12.7 lbf box on a wooden floor by pushing the box with 2.4 N of force forward and down at an angle 4.4o with respect to the floor. The box is moving with a constant speed of 0.3 m/s. What is the magnitude of the force of friction among the box and the floor?
Two objects each have a positive charge. The total charge on both objects is 390 µC. When the objects are placed a distance of 1.20 m apart, each exerts an electrostatic force of 21.3 N on the other. What is the charge on each object? (Round the a..
The voltage across the terminals of a 9.20 Volt battery is 8.10 Volt when the battery is connected to a 40 ohm load. Evaluate the battery internal resistance
Ligh of wavelength 610 nm is incident on a slit 0.20 mm wide, what is the width of the central maximum
a transformer has N^1 =350 turns and N^2 =2000 turns. what voltage is developed across the secondary coil?
A thin film of water sits on top of a flat piece of glass; and light is incident from below (see the subsequent figure). If the angle of incidence is θ = 20°, what is the angle of refraction of the final outgoing ray?
A 1.00 liter bubble of air at the bottom of the Marianas Trench has an inital temperature of about 0C. what is the volume of the bubble as it breaks the surface
A 25 gram ball is released from rest 80 meter above the surface of the Earth. Determine its speed just before it hits the surface
A 0.642 kg basketball is dropped out of a window that is 6.42 m above the ground. How much work is done on the ball by its weight
A ball is attached to a center post by a string that is 0.481 m long. The ball is moving in a circle on a frictionless table top at a speed of 1.40 m/s with a radius of 0.481 m. What is the centripetal acceleration of the ball
Copper wire 0.4 mm in diameter is tightly wounded into a long solenoid and a 3.6A current passes through it. What is the magnetic field in the solenoid
A system does 4.4 × 104 Joule of work, and 7.9 ×104 Joule of heat flows into the system during the process. Obtain the change in the internal energy of the system
Calculate the speed of block at the instant the dielectric leaves the capacitor assuming it starts at rest and that the voltage across capacitor after the dielectric is removed is measured to be 200 V.
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